scholarly journals Morphometry of Tabebuia aurea (Manso) Benth. & Hook. f. ex S. Moore subjected to different substrates

Conjecturas ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 134-145
Author(s):  
Maria José de Holanda Leite ◽  
Elenilton Lessa Silva dos Santos ◽  
João Paulo Fernandes de Moraes ◽  
Natália Helena Malta Soares ◽  
Pedro Henrique de Melo Cavalcante ◽  
...  
Keyword(s):  
Dry Matter ◽  
Coconut Fiber ◽  
Plant Ecophysiology ◽  
Lack Of Information ◽  
Content Index ◽  
Number Of Leaves ◽  
Materials Used ◽  
And Control ◽  
The Ideal

The morphometry and quality of seedlings of tree species is of fundamental importance to achieve success in reforestation or commercial exploitation project. Due to the lack of information about the ideal substrate for the production of craibeira seedlings and taking into account the diversification of the use of Tabebuia aurea production of native seedlings for the recovery of degraded areas, this work was conducted with the objective of evaluating the development of seedlings of this species produced with bovine manure and coconut fiber. The present work was carried out at the plant ecophysiology laboratory at the Agrarian Engineering and Sciences Campus (CECA), in Rio Largo, north-region of the state of Alagoas. Four treatments were used, which consisted of a mixture of soil + organic material, in the proportion 3:1. The materials used were tanned bovine manure (ESCB), coconut fiber (CFS) and control (soil). Whose proportions of the treatments were: T1: soil + 0% coconut fiber; T2: soil + 11% coconut fiber; T3: soil + 22% coconut fiber; T4: soil + 33% coconut fiber and T5: soil + 33% cattle manure. Macro and micronutrient analyses of the substrates used were performed. To meet the work objective, the following parameters were evaluated: plant height, stem diameter, number of leaves and leaf dry matter, stem and root and chlorophyll content index. It can be concluded that the substrates chosen for evaluation showed few significant differences in relation to seedling development; the mixture of treatment 2 (soil+coconut fiber 11%) provided a higher percentage of survival and the quality of seedlings were higher; The substrate treatment 4 (soil+coconut fiber 33%) showed much lower results in all evaluated results. However, statistically there were no significant differences in relation to the other treatments and the presence of bovine manure (soil+bovine manure 33%) results in benefits such as greater nutrient supply and possible reduction of seedling costs.

scholarly journals Substrates and Irrigation Frequencies in the Development of Seedlings of Schizolobium parahyba var. amazonicum

2018 ◽  
Vol 10 (11) ◽  
pp. 249
Author(s):  
José Darlon Nascimento Alves ◽  
Wendel Kaian Oliveira Moreira ◽  
Leilane Ávila Bezerra ◽  
Shirlene Souza Oliveira ◽  
Tayssa Menezes Franco ◽  
...  
Keyword(s):  
Dry Matter ◽  
Stem Diameter ◽  
Initial Growth ◽  
Seedling Height ◽  
Substrate Type ◽  
Efficient Manner ◽  
Best Response ◽  
Schizolobium Parahyba ◽  
The Ideal

Knowledge on the ideal conditions for the formation of high quality seedlings is fundamental to guarantee establishment success of crops in a safe and efficient manner. Here, we evaluate the effect of different substrates and irrigation frequencies on the initial growth of parica (Schizolobium parahyba var. amazonicum) seedlings. The experiment was conducted in a greenhouse at the Federal Rural University of Amazônia, Capitão Poço, PA. Several variables were analyzed including seedling height, stem diameter, number of leaflets, shoot dry matter, root dry matter, total dry matter, height and stem diameter ratio, shoot dry matter ratio and root dry matter. We found significant differences in seedling development between the applied treatments, including a significant interaction between substrate type and irrigation regime on seedling height, stem diameter, the number of leaflets and plant growth indices, with the best response for proportions 75% soil + 25% bovine manure and 50% soil + 50% bovine manure. Therefore, the substrates containing organic compounds resulted in a higher quality of the seedlings, while the sand consistently presented the lowest increases in seedling production under the three experimental irrigation frequencies, and thus is not recommended as a substrate for the development of Schizolobium parahyba var. amazonicum.

scholarly journals Iron doses in the production of potted rosebushes

2017 ◽  
Vol 47 (3) ◽  
Author(s):  
Luiz Antônio Zanão Júnior ◽  
Maristela Pereira Carvalho-Zanão ◽  
Natália Pereira ◽  
José Antônio Saraiva Grossi ◽  
Reginaldo Ferreira Santos
Keyword(s):  
Dry Matter ◽  
Block Design ◽  
Total Chlorophyll ◽  
Experimental Plot ◽  
Flower Stalk ◽  
Floral Longevity ◽  
Randomized Block Design ◽  
Matter Production ◽  
Number Of Leaves

ABSTRACT: The production and quality of roses are influenced by fertilization management. The aim of this experiment was to evaluate the effects of doses of iron (Fe) in the production of potted rose bushes ( Rosa hybrida ). Treatments were based on five doses of Fe (0, 1, 3, 5 and 15mg kg-1) applied on the substrate, in a randomized block design with four replications. Seedlings presented two pairs of leaves and were individually transplanted into plastic pots (0.8dm3) containing commercial substrate. Each experimental plot consisted of a vase with a plant with two flower stalks. The following parameters were evaluated: number of leaves and flowers per flower stalk; dry matter production of roots, leaves and flowers; plant height and diameter and floral longevity. In addition, foliar levels of total chlorophyll and Fe were determined. Fertilization with Fe increases the production and quality of flowers of the rosebush cv. 'Shiny Terrazza' (r). Dose of Fe to be added to the substrate used in this study for maximum economic efficiency for this cultivar is 3.6mg kg-1.

scholarly journals Productivity and growth in cowpea inoculated with rhizobia under different light environments

2021 ◽  
Vol 37 ◽  
pp. e37057
Author(s):  
Andreza De Jesus Correia ◽  
Rafaela Simão Abrahão Nóbrega ◽  
Amanda Santos Oliveira ◽  
Welly Sacramento Santana ◽  
Caliane Da Silva Braulio ◽  
...  
Keyword(s):  
Relative Efficiency ◽  
Dry Matter ◽  
Nitrogen Sources ◽  
Control Treatment ◽  
Individual Effect ◽  
Light Conditions ◽  
Diazotrophic Bacteria ◽  
Aerial Portion ◽  
Number Of Leaves ◽  
And Control

The objective of this work was to verify the influence of light environments combined with rhizobia inoculation on cowpea growth and productivity. A completely random design was used in a 4x4 factorial scheme, with four light environments, four nitrogen sources and eight replicates in split plot parcels. Light environments were set by means of photo-conversion and thermo-conversion nettings (Aluminet®, red net and black net) and control treatment without shading (full sun). Nitrogen sources were constituted by the strains INPA 03-11B - SEMIA 6462 (Bradyrhizobium elkanni) and UFLA 03-84 - SEMIA 6461 (Bradyrhizobium viridifuturi), and two control treatments: with 70 kg ha-1 of mineral nitrogen and without N. Plant height, indices of chlorophyll a, b and total chlorophill, the number of leaves, number of nodules, dry matter of nodules, dry matter of the aerial portion, dry matter of roots and total dry matter, relative efficiency, gathering of nitrogen in the aerial portion, number, length and matter of pods per plant and dry matter of 100 grains, were evaluated. . There was interaction between light conditions and nitrogen sources for the number of nodules. Individual effect was observed in all other variables. Strain INPA 03-11B was able to promote higher nodulation in cowpea plants in light environments under full sun and Aluminet and the strain UFLA 03-84 only under full sun conditions. However, the efficiency of diazotrophic bacteria to promote vegetative growth, nitrogen gathering and production was not influenced by different light environments. Thus, full sun cultivation is recommended, independently of the nitrogen source used.

Effectiveness of a Lactobacillus sakei Starter Culture in the Reduction of Biogenic Amine Accumulation as a Function of the Raw Material Quality

2001 ◽  
Vol 64 (3) ◽  
pp. 367-373 ◽  
Author(s):  
SARA BOVER-CID ◽  
MARIA IZQUIERDO-PULIDO ◽  
M. CARMEN VIDAL-CAROU
Keyword(s):  
Biogenic Amine ◽  
Dry Matter ◽  
Raw Materials ◽  
Starter Culture ◽  
Raw Material ◽  
Lactobacillus Sakei ◽  
Hygienic Quality ◽  
Fermented Sausages ◽  
Materials Used

The effectiveness of an amine-negative starter culture (Lactobacillus sakei CTC494) in the reduction of biogenic amine production during the ripening of fermented sausages was examined. Four batches were manufactured in parallel:spontaneously fermented and starter-mediated sausages were manufactured from two lots of raw materials of different hygienic quality. Besides the biogenic amine contents, changes in the microbial counts, nitrogenous fractions, pH, and water content were measured at several sampling points during the ripening process. In sausages manufactured from good quality meat, the starter strain of L. sakei reduced and even inhibited biogenic amine accumulation during sausage fermentation, the end products showing extremely low biogenic amine contents (tyramine levels less than 15 mg/kg of dry matter and putrescine and cadaverine levels less than 5 mg/kg of dry matter). Nevertheless, starter-mediated sausages made from poorer-quality raw materials showed much higher amine contents (308, 223, and 36 mg/kg of dry matter of cadaverine, tyramine, and putrescine, respectively), which were only slightly lower than those of the spontaneously fermented sausages made from the same raw materials. The relatively high bacterial numbers of raw materials of poorer-hygienic quality diminished the beneficial effect of the starter strain. Therefore, the effectiveness of the starter was strongly dependent on the hygienic quality of the raw materials used.

scholarly journals Production of gherkin seedlings in coconut fiber fertirrigated with different nutrient solutions

Revista CERES ◽  
2016 ◽  
Vol 63 (5) ◽  
pp. 698-705
Author(s):  
Francisco de Assis de Oliveira ◽  
Maria da Saúde de Souza Ribeiro ◽  
Mychelle Karla Teixeira de Oliveira ◽  
Daniele Campos Martins ◽  
Maria Lilia de Souza Neta ◽  
...  
Keyword(s):  
Leaf Area ◽  
Dry Matter ◽  
Dry Weight ◽  
Ionic Concentration ◽  
Vegetable Production ◽  
Coconut Fiber ◽  
Main Root ◽  
Key Factor ◽  
Number Of Leaves ◽  
Nutrient Solutions

ABSTRACT Seedling quality is a key factor to achieve success in vegetable production. The present work aimed to evaluate the production of gherkin seedlings in substrate of coconut fiber fertirrigated with different concentrations of nutrients. The experimental design was completely randomized in a 3 × 5 factorial with four replications. The treatments consisted of combinations of three cultivars of gherkin (Do Norte, Liso de Calcutá, e Liso Gibão) with five concentrations of nutrients in the solution (0, 25, 50, 75, and 100%). The nutrient solution, considered standard, matches the recommended solution for melon in hydroponic systems. We evaluated the variables: chlorophyll index, shoot length, number of leaves, stem diameter, main root length, dry weight of leaves, roots, and stem, mass of total dry matter, leaf area, specific leaf area, and leaf area ratio. All variables were affected by the ionic concentration in nutrient solutions. The use of coconut fiber in the production of gherkin seedlings is more efficient with nutrient solutions in concentrations ranging from 75 to 100% of the recommended solution for melon cultivation.

scholarly journals Production and quality of mini watermelon cv. Smile irrigated with saline water

2016 ◽  
Vol 20 (10) ◽  
pp. 897-902 ◽  
Author(s):  
Alan B. O. de Sousa ◽  
Sérgio N. Duarte ◽  
Osvaldo N. de Sousa Neto ◽  
Ana C. M. Souza ◽  
Pedro R. F. Sampaio ◽  
...  
Keyword(s):  
Experimental Design ◽  
Salt Tolerance ◽  
Dry Matter ◽  
Saline Water ◽  
Chemical Characteristics ◽  
Physical And Chemical Variables ◽  
Number Of Leaves ◽  
Physical And Chemical ◽  
Number Of Branches

ABSTRACT The purpose of this study was to evaluate the salt tolerance of mini watermelon (cv. Smile). The experiment was carried out in the greenhouse of the Department of Biosystems Engineering of ESALQ/USP. The experimental design was randomized blocks. The plants were irrigated with five levels of salinity (S1 = 1.0; S2 = 2.0; S3 = 3.0; S4 = 4.0 and S5 = 5.0 dS m-1). At 85 days after the beginning of the experiment, the plants and the physical and chemical variables of the fruit were evaluated. Salinity negatively affected the variables: length of the main stem, stem diameter, number of leaves, number of branches, leaf area, fresh and dry matter. Regarding the physical and chemical characteristics of fruits, salinity reduced the mass, diameter and the pH of the fruit, but increased its vitamin C content. In general, the results suggest that the mini watermelon (cv. Smile) is moderately sensitive to salinity.

scholarly journals Analysis of Defect and Quality Improvement for O Ring Product Through Applying DMAIC Methodology

Jurnal PASTI ◽  
2019 ◽  
Vol 13 (2) ◽  
pp. 136
Author(s):  
Uly Amrina ◽  
Helmy Firmansyah
Keyword(s):  
Business Strategy ◽  
Control Charts ◽  
Key Factors ◽  
Quality Principles ◽  
Cutting Length ◽  
Product Defect ◽  
Voice Of Customer ◽  
And Control ◽  
The Ideal

To control the quality of a product to meet standards, a reliable measurable technique is needed with the company's business strategy. This research raises case studies identifying quality problems and effective ways of improvement of O Ring products using DMAIC (Define-Measures-Analyse-Improve-Control) quality control methods. Company X found the problem in the form of an average O Ring product defect ratio reaching 1.50% (the company's target is 1.30%). DMAIC is a systematic methodology that focuses on the key factors that control the performance of a process, set it at the best level and keep it at that level. Statistical tools combined with quality principles are applied to each of the DMAIC phases. In the define phase, flowcharts, critical to quality trees, and voice of customer lists are used which produce five types of defects in curing process. In the measure phase, the sigma value combined with pareto diagram are used and shows that the current sigma value is 4,178 with the biggest defect is flow-mark for the O Ring type ZZ00000123. In phase analysis, the root causes of the problem are searched using the why-why analysis and cause-effect diagrams and finds out that the causes are un-sticky rubber tip and unstandardized rubber cutting length. In the improve phase, DOE-based experiments are conducted to get the ideal rubber tip and cutting length conditions. Finally, the work standard is revised in the control phase and monitored by check sheets and control charts. The result of this DMAIC implementation was the O Ring products defect dropped to 0.83% and the sigma value rose to 4,363.Keywords: quality, DMAIC, O Ring, defect, sigma, standard

scholarly journals ASSESSMENT OF THE DEGREE OF KNOWLEDGE OF DENTISTS REGARDING THE USE AND DISPOSAL OF RADIOGRAPHIC MATERIAL

2020 ◽  
Vol 8 (6) ◽  
pp. 126-132
Author(s):  
Caio Vinicius G. Roman-Torres ◽  
Fernanda Pasquinelli ◽  
Nilton Rodrigues A. P. Domingues ◽  
Luiz Alberto Placido Penna
Keyword(s):  
Radiological Protection ◽  
Dental Radiology ◽  
Public Agencies ◽  
Significant Difference ◽  
Professional Specialty ◽  
The Subject ◽  
Dental Offices ◽  
Materials Used ◽  
And Control

Concern about the risks of radiation and the quality of the radiographic image has led many researchers and public agencies to carry out studies on the subject, which have found the existence of a series of problems in the practice of dental radiology. Based on the above, the objective of this study was to evaluate the knowledge and attitudes of dental surgeons regarding biosafety and the use of devices and materials used throughout the radiographic process in dental offices. 200 Dentists were interviewed with offices in some cities in the Baixada Santista region in the State of São Paulo, Brazil, variables such as age, gender, time since graduation, professional specialty, were only identified at the time of the interview. During the visit, the researcher assessed, by means of a questionnaire, components related to the radiological practice in the offices and about the attitudes during the radiological practice and, consequently, about the radiological protection rules adopted, either for the patients or professionals involved. When the questionnaire was applied, a statistically significant difference was observed in relation to the concept of biosafety 98% of the interviewees answered yes, that they know what biosafety is. If there are notices in the office warning about the x-ray equipment, 89% responded that they do not. The viewing of radiographs taken previously by the patients was indicated by 97.5% of the interviewed dentists, and 95% use breast and thyroid protection with a lead apron. More than half of the dentists, 52%, discard the substances used in the revelation process in the office sink. The results observed in our study are not encouraging, either due to the ignorance of the current legislation, the use of the devices inappropriately and the processing carried out with real chances of contamination of the environment, we believe that an increase in teaching and control of biosafety in dental radiology is necessary.

scholarly journals Effect of Soil Solarization and Fumigation on Productivity and Fruit Quality of Strawberry

HortScience ◽  
2006 ◽  
Vol 41 (4) ◽  
pp. 972B-972
Author(s):  
Mohamed Ragab
Keyword(s):  
Ascorbic Acid ◽  
Fruit Quality ◽  
Methyl Bromide ◽  
Root Length ◽  
Total Yield ◽  
Soluble Solids ◽  
Crown Diameter ◽  
Number Of Leaves ◽  
And Control

A study of solarization and fumigation with methyl bromide (MB) on productivity and fruit quality of strawberry were investigated during two successive seasons of 2002–03. There were nine treatments: fumigation with methyl bromide (MB), solarization, their combination, and Nemaless. Results demonstrate that plant height, number of leaves per plant, average leaf area, root length, and crown diameter were significantly increased by fumigation with MB as compared with solarization or using Nemaless in the two tested seasons. Significant increments were obtained also in early and total yield, as well as total soluble solids and ascorbic acid when soil was fumigated with MB compared with solarization or using Nemaless. The highest total yield found with treatments was MB at 70 g/m2, followed by MB at 50 g/m2, 2-month solarization plus MB at 30 g/m2, 1 month plus MB at 30 g/m2, MB at 30 g/m2, 2 months solarization, one month solarization, Nemaless, and control in the both tested seasons, respectively. Nemaless caused significant increments in early and total yield compared with the control in the two tested seasons. The results of this study provide evidence to suggest that a better understanding of different fumigation methods may aid us in the efforts to improve management of strawberry production.

scholarly journals Germination and vigor of Dimorphandra mollis benth. seeds under different temperatures and substrates

2010 ◽  
Vol 34 (2) ◽  
pp. 205-213 ◽  
Author(s):  
Mauro Vasconcelos Pacheco ◽  
Vilmar Luciano Mattei ◽  
Valderez Pontes Matos ◽  
Lucia Helena de Moura Sena
Keyword(s):  
Dry Matter ◽  
Native Forest ◽  
Coconut Fiber ◽  
Seed Moisture Content ◽  
Paper Towel ◽  
Seed Moisture ◽  
Different Temperatures ◽  
Physiological Quality ◽  
Dry Matter Weight

The Dimorphandra mollis Benth. - Caesalpiniaceae is a native forest species coming from the Cerrado and Caatinga due to its economical and ecological use, which justifies the studies on seed germination. In this work, germinative performance of D. mollis seeds were studied in different conditions of temperature regime and substrate. The experimental delineation used was completely randomized in factorial 4 x 4 (4 substrates -sand, coconut fiber, vermiculite and paper towel; and 4 temperatures: 25, 30, 35 and 20-30ºC), with four replications of 25 seeds each. The following parameters were evaluated: seed moisture content, final germination, first germination count, germination speed index, length and dry matter weight. The best germination and vigor is obtained at 30 and 35ºC. The substrates paper towel and vermiculite allow satisfactory germinative performance of seeds, being suitable to evaluate the physiological quality of D. mollis seeds.

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